Color or chromatic printing machine



Nov. 22, 1927. 1,650,110

EJBUE NO COLOR on CHROMATIC PRINTING MACHINE Filed Nov. 11, 1924 2 Sheets-Sheet 1 17021-6 72 507 .5 Bz467z0 Nov. 22, 1927.

' E. BUENO COLOR 0R CHROMATIC PRINTING MACHINE Filed Nov. 11, 1924 2 Sheets-Sheet 2 Zn U 7L Z07 .EQBdezzO 7 Af/y Patented Nov. 22, 1927.

UNITED STATES EMILE BUENO, OF HERICOURT, FRANCE.

COLOR OR CHROMATIC PRINTING MACHINE.

Application filed November 11, 1924, Serial No. 749,278, and in France November 22, 1923.

My invention relates to color or chromatic printing machines for reproducing on paper with their own color the images of autochromatic, omnicolor and other plates.

The machine forming the object of this invention differs from those hitherto known inasmuch as the exploring style is replaced by elcctro-photo-optical selection arrangements which allow of directly utilizing the in auto-chromatic plate for controlling the colors. It allows the use of auto chro-inatic plates whether reversed or not which in the latter case simplifies all manipulations for the development of such plates in the same manner as for ordinary negatives.

Owing to the direct control of the auto-- chromatic plates the use of three selected chromatic negatives and of three reliefs are dispensed with as well as all manipulations connected therewith, adjusting points and their blackening; the auto-cln'on'iatic plate being held by tabs, the regulating and stopping devices are likewise dispensed with as well as adjustable microscopes.

This machine operates only in the direction of motion of the discs when the carriage is nearing the axis which allows for the inclination of the reproducing style in the same direction, thus preventing the tearing of the carbon paper by this style, for which purpose a screw threaded jaw allows the carriage to be disconnected and brought rapidly back by the aid of a crank handle.

The number of revolving discs mounted upon the same axis is unlimited aswell as the number and sizes of the cases receiving the auto-chromatic plates, and the cl1romocopies have no other limit but their own size and that of the revolving discs. In this machine the upper discs receive the auto-chro matic plates and the chromo-copies are taken up by the lower discs.- Each auto-chromatic plateco-ntrols the chromo-copies scale placed vertically under the same. t

The machine is made of metal with the exception of the surfaces designed to receive the chrome-copies. These surfaces are formed of wooden plates thoroughly levelled and having dimensions slightly superior to thoseof the copies placed in the revolving discs and projecting about two millimeters.

The machine described by way of example takes simultaneously six auto-chromatic plates 13 x 18 cm. or twelve 9 x 12 cm. on each disc C, that is to say the six discs will permit thirty six chromo-copies 13 x 18 cm.

or seventy two copies 9 x 12 cm. and may -be constructed of any suitable size.

points of the auto-chromatic platesand copies do not pass under these parts at a constant speedbut at a gradually slower speed as these parts are nearing the axis. This defect is corrected by means of a. variable resistance interposed in the motor circult, the result being a uniform impression over the whole of the surface of the chro matic copies.

When the first mono-achromatic taking is ended, one of the resistance rubbers stops the contact, the motor circuit is opened and the machine stops automatically. This machine uses but one reproducing style per disc. The disc motion is imparted by any suitable electric motor of suflicient power driving through a very smooth belt one of the pulleys keyed on the shaft. 4

In the accompanying drawings, Fig. l is an elevation of the machine, shown by way of example, Fig. 2 is a plan View; of the upper part of the machine on section line a a. Fig. 3 is a. plan view of the lower part on section line a a.

In Figs. 2 and 3 the electric-conductors as well as the amplifying lamps have not been shown for the sake of clearing the mechanical parts.

This machine is composed of a. shaft A upon which is keyed a revolving disc B with openings 1 to receive; the auto-chromatic plates held in their place by tabs 2; a series of revolving discs C are furnished with wooden plates 3 to receive the chromatic copies and with ribs to ensure a proper level.

The shaft ends are formed with two journals one of which-tl1e upper one--turns in a step bearing 5 to take up any play by means of the screw 6 fitted in the upper part of the elbow piece or clamp D. The lower pivot turnsin a step bearing 7 fitted in the lower part'of the clamp D. The latter forms really the back bone or frame of the machine and' is bolted to the bed plate E resting on the ground. The lower part of the shaft A is screw threaded to drive a pinion F fixed upon the screw 8 which actuates the carriage G in consequence of its rotation in the screw threaded aw H. The end ofthe screw 8 is coated with insulated material upon which is coiled a ferro-nickel wire forming a. variable resistance, one of its extremities joins a copper cylinder 10 likewise insulated.

An insulated friction member 11 leads the current to the resistance, another one 12 like wise insulated collects it on the copper cylinder and leads it in a modified state to the motor.

The carriage G consists of a cast iron column bolted upon a slide I fixed to the bed plate E. A crank handle J mounted upon a rack allows the carriage to be'rapidly carried backwards.

Upon the cast iron column are fixed the arms K supporting the reproducing style-s L and the electro-photo-optical arrangements which comprises an incandescent electric bulb containing a very short filament or a tungsten ball 13 of great brightness. It comprises likewise a condenser 14, a microscope 15, a diaphragm 16, a prism 17, a mirror 18 and a dark camera 19 with its photo-electric lamp 20 for which may be substituted 'a selenium cell or any other body having the property of being electrically modified under the action of light.

'Yet the lamps with potassium electrodes in rarefied hydrogen or sulphite of thallium were hitherto the -most suitable for this machine as their inertia to the passage of the current is practically null and their sensibility is considerable.

Outside the machine is found the electric source M driving the motor which as it may be of any suitable construction has not been shown on the drawings, two arrows merely indicating the coming and return of the current to the motor. This source M may likewise feed the lamp 13, while the source N feeds the photo-electric lamp 20 and the reproducing styles on their way through the amplifying lamps O with three electrodes. The supplying current P opens or closes the circuit;

Among the above mentioned elements two are more particularly worthy of attention viz the carriage G and the electro-photo arrangements.

Carriage G.Before each mono-chromatic impression it is necessary to position the carriage by bringing it rearwards. To

do this the cotter pin 21 is removed, the

bolt 22 is drawn and the screw-threaded jaw H is raised thus disconnecting the screw 8. 7 It becomes thus easy to bring the carriage G backward by operating the crank handle J. In this position the contact 11 touches one end of the resistance 9 and the contact 10 touches the beginning of-the cylinder where ends the other extremity of the said resistance, the current then passing throu h the greatest resistance before reaching t e motor, the screw threaded jaw is then connected anew, the bolt 22 and the cotter pin 21 are put back in their lace. In the course of the working of the machine, the friction device 11 comes near the cylinder thus reducing the length of the ferronickel wire whence the rotary speed of the discs B and 0 increases.

Photo-electro-optz'cal arrangementA-This arrangement which has for its object to control the colors operates in the following manner: If the pin of the current device P is put in its place, the rays from the incandescent lamp 13 pass through the condenser 14 and reproduce the filament image upon the auto-chromatic plate (the condensers focus being situated in the plane of this plate).

These rays pass subsequently through the microscope constructed in such a manner as to arrive enlarged to about 14 diameters upon the diaphragm 16 formed with a black disc through the centre of which passes a ray tangential to the revolving discs 10 m. m. in length and 2/10th of a millimeter in width.

It will be readily understood that on the passage of the whitelightthrough the autochromatic plate the colored fecula grains have absorbed the radiations that are foreign to the fundamental colors coloring the plates, and there can only pass fine light penoils of orange, green and violets The diaphragm ray that allows the passage of a line of colored pencils which as they pass through the prism form in the spectral order three clearly distinct rays upon the mirrorgrouping each pencil of the same color. The

mirror is then handled in such a manner as to direct one of the three rays upon the photo-electric lamp 20 according to the color which is required to be printed. Hence owing to the distance between the photoelectric lamp 20 and the microscope 15 the colored pencils representing the fecula grains arrive considerably enlarged so that each one of them covers in turn'the lamp 20 as the discs B and C move.

Mode of operation of the maobline.The uninverted auto-chromatic plates are placed in the cases 1 of the upper disc B. They are fixed by tightening the tabs 2. Then the sheets designed to receive an impression in color arefixedby means of drawing pins upon the plates 3 of the revolving disc 0, they are covered over with carbon paper sheets (blue for instance) of a slightly larger size which are likewise fixed by drawin pins, but outside the copies.

The circuit of the lamp 13 is then closed and the mirror is handled so that the orange colored ray may be situated over the opening of the dark camera 19, the circuit of the by bringing it ackw'ards, and the circuit of the lamp 20 is closed again, this circuit belamp 20 being 0 en. The carriage G is armed chromatic plates.

ing that of the motor. The discs B and C starting revolving the lamp 20 transmits the variations of light to the reproducing styles L, the electric current being amplified by the lamps O. The blue image is thus printed. When it is completed the friction device leaves the cylinder 10, the motor current is stopped and the machine stops automatically. The blue carbon paper is then removed and replaced by a red one Without touching the chromatic copies, the green from the mirror ray is directed upon the lamp 20 and by continuing as before the red image is grafted on the blue.

The process continues with the violet ray and green or yellow paper carbon and a series of chromatic copies are thus obtained Whose colors reproduce the original auto- For the use of inverted chromatic plates it is suflicient to use carbon paper of the same color as the rays.

From the time when the discs start revolving the machine must be in total darkness until the automatic stoppage takes place, with,the exception of the lamps, the workshop being constructed accordingly.

I claim:

1. In a color or chromatic printing machine comprising a framework, a shaft mounted for rotation therein, a plurality of disks arranged in superimposed relation on the shaft, the upper disk being formed to receive and support auto-chromatic plates, the remaining disks being formed to receive chromatic copies, a carriage movable with respect to the shaft, reproducing stylescooperating with each disk below the uppermost disk and movable radially of the disks in the operation of the carriage, and electrophoto-optical means mounted on the carriage for controlling the actuation of the respective styles from the chromatic plates of the upper disk.

2. In a color or chromatic printing machine comprising a framework, a shaft mounted forrotation therein, a plurality of disks arranged in superimposed relation on theshaft, the upper disk being formed to receive and support auto-chromatic plates, the remaining disks being formed to receive chromatic copies, a carriage movable with respect to the shaft, reproducing styles cooperating with each disk below the uppermost disk and movable radially of the disks in the operation of the carriage, and electrophoto-optical means mounted on the carriage for controlling the actuation of the respective styles from the chromatic plates of the upper disk, said means including a lamp and condenser arranged below the upper disk and a microscope, diaphragm, prism, mirror and photo-electric lamp arranged above said upper disk.

3. In a color or chromatic printing machine, a revolving disk carrying an autochromatic plate, a lamp and a'condenser for concentrating the White image of the lamp filament upon the auto-chromatic plate, a

microscope receiving the selected ray of the said plate, a diaphragm traversed by the ray, a prism for separating the chromatic rays, a mirror for directing the selected ray, a photo-electric lamp for receiving the ray from the mirror, and means for utilizing the photo-electric lamp as a control for a reproduction mechanism.

Signed .at Paris, France this 30th day of October, A. D. 1924.

EMILE 'BUENO. 

